Yet for all the anti-nudity rules, you can still get away with sideboob, underboob, sidebutt, underbutt, and even camel toe; show a nipple (even an illustrated nipple), though, and you can expect the ax to fall. And so the nipple has become the poster body part for social-media nudie rebellion, as led by stars like Rihanna and Scout Willis.

Ah, but for every rule, a loophole; for every attempt to repress a nip-shot, an alternate image. If you want to join the revolution without fear of losing your whole Instagram history, here are a workarounds:

1. Post a picture of your nipples on Twitter. Take a screenshot of the tweet and post it to Instagram.